2004280

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{563}}^1$

素因数の和:663

約数の個数: 32

約数和(自身を含む): 4568400

約数和(自身を除く): 2564120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 563, 712, 890, 1126, 1780, 2252, 2815, 3560, 4504, 5630, 11260, 22520, 50107, 100214, 200428, 250535, 400856, 501070, 1002140, 2004280]

約数ペア:

[(1, 2004280), (2, 1002140), (4, 501070), (5, 400856), (8, 250535), (10, 200428), (20, 100214), (40, 50107), (89, 22520), (178, 11260), (356, 5630), (445, 4504), (563, 3560), (712, 2815), (890, 2252), (1126, 1780)]